RAVPower iPhone 6 Battery Case Ultra Slim 3000mAh Extended Charge Case for iPhone 6 6s with Faster Charge Extend Your iPhone 6 / 6S With 125% More Battery Life: 3000mAh battery case adds 63 extra hours audio or up to 17 hours of talk time. MI certified s complete charge / sync / data compatibility with iPhone 6 / 6S. Unique 2-Piece Design: adds an extra layer of protection for your device against drops, scratches, and bumps. Crafted to the specific dimensions of iPhone 6 and 6s, easily slides in and out without squeezing or jamming Smart LED Battery Level Indicator & Power Button: shows how much battery is left, and puts you in complete control of when to use the battery case for charging. Press and hold the smart power button to start / stop charging as you need Micro-USB Input Port: let you charge, sync, and transfer data from your iPhone without removing the case, also comes with 3.5mm headphone cable extension for listening to music / talking 100% Safe: with internal circuit protect against over-heating, over-charging, and short circuit. Fully certified with CE/FCC/MI/UN/PSE. Each unit comes with Allianz insurance protection.